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Title: Time-Resolved Photoemission of Correlated Electrons Driven Out of Equilibrium

Abstract

We describe the temporal evolution of the time-resolved photoemission response of the spinless Falicov-Kimball model driven out of equilibrium by strong, applied fields. The model is one of the few possessing a metal-insulator transition and admitting an exact solution in the time domain. The nonequilibrium dynamics, evaluated using an extension of dynamical mean-field theory, show how the driven system differs from two common viewpoints - a quasi-equilibrium system at an elevated, effective temperature (the 'hot' electron model) or a rapid interaction quench ('melting' of the Mott gap) - due to the rearrangement of electronic states and redistribution of spectral weight. The results demonstrate the inherent trade-off between energy and time resolution accompanying the finite width probe-pulses, characteristic of those employed in pump-probe, time-domain experiments, which can be used to focus attention on different aspects of the dynamics near the transition.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Org.:
USDOE
OSTI Identifier:
972259
Report Number(s):
SLAC-PUB-13843
TRN: US201006%%1026
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Journal Article
Journal Name:
Submitted to Physical Review Letters
Additional Journal Information:
Journal Name: Submitted to Physical Review Letters
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTRONS; EXACT SOLUTIONS; MEAN-FIELD THEORY; MELTING; PHOTOEMISSION; TIME RESOLUTION; Other,MATSCI, OTHER

Citation Formats

Moritz, B., /SLAC, SIMES, Devereaux, T.P., /SLAC, SIMES /Stanford U., Geballe Lab., Freericks, J.K., and /Georgetown U. Time-Resolved Photoemission of Correlated Electrons Driven Out of Equilibrium. United States: N. p., 2010. Web. doi:10.1103/PhysRevB.81.165112.
Moritz, B., /SLAC, SIMES, Devereaux, T.P., /SLAC, SIMES /Stanford U., Geballe Lab., Freericks, J.K., & /Georgetown U. Time-Resolved Photoemission of Correlated Electrons Driven Out of Equilibrium. United States. doi:10.1103/PhysRevB.81.165112.
Moritz, B., /SLAC, SIMES, Devereaux, T.P., /SLAC, SIMES /Stanford U., Geballe Lab., Freericks, J.K., and /Georgetown U. Mon . "Time-Resolved Photoemission of Correlated Electrons Driven Out of Equilibrium". United States. doi:10.1103/PhysRevB.81.165112. https://www.osti.gov/servlets/purl/972259.
@article{osti_972259,
title = {Time-Resolved Photoemission of Correlated Electrons Driven Out of Equilibrium},
author = {Moritz, B. and /SLAC, SIMES and Devereaux, T.P. and /SLAC, SIMES /Stanford U., Geballe Lab. and Freericks, J.K. and /Georgetown U.},
abstractNote = {We describe the temporal evolution of the time-resolved photoemission response of the spinless Falicov-Kimball model driven out of equilibrium by strong, applied fields. The model is one of the few possessing a metal-insulator transition and admitting an exact solution in the time domain. The nonequilibrium dynamics, evaluated using an extension of dynamical mean-field theory, show how the driven system differs from two common viewpoints - a quasi-equilibrium system at an elevated, effective temperature (the 'hot' electron model) or a rapid interaction quench ('melting' of the Mott gap) - due to the rearrangement of electronic states and redistribution of spectral weight. The results demonstrate the inherent trade-off between energy and time resolution accompanying the finite width probe-pulses, characteristic of those employed in pump-probe, time-domain experiments, which can be used to focus attention on different aspects of the dynamics near the transition.},
doi = {10.1103/PhysRevB.81.165112},
journal = {Submitted to Physical Review Letters},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {2}
}